We look at the division of 561660 by 37 
The aim is to understand the frequency of 37 in 561660.

Step 1:
5 divided by 37 is 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Append the next digit (6) from the dividend to 5 and continue with: 56 / 37

Going ahead to step 2:
37 can be fit into 56 1 times, resulting in a remainder of 19.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 37 from 56 and we're left with 19.
Include the next digit (1) from the dividend after 19, then repeat: 191 / 37

Step 3:
When dividing 191 by 37, we get 5 with a remainder of 6.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
If we subtract 185 from 191, we get 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 37

On to step 4:
If we divide 66 by 37, we get 1 and a remainder of 29.
Put 1 as the next digit of the answer. 
Result so far: 151.0
If we take 37 away from 66, we end up with 29.
Bring next digit (6) of the dividend behind the 29 and repeat the process: 296 / 37

Let's proceed to step 5:
When dividing 296 by 37, we get 8 with a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 1518.0
If we take 296 away from 296, we end up with 0.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 37

Step 6:
0 divided by 37 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 15180.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 7:
If we divide 0 by 37, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 15180.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
The number 37 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 15180.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 15180.0 with a remaining 0.0.